Don't check for last private tab in closing windows:

we check it in windowClosingHandler()
Infocatcher · Dec 13, 2013 · 23e1f62 · 23e1f62
1 parent 836e458
commit 23e1f62
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/bootstrap.js b/bootstrap.js
@@ -1093,6 +1093,10 @@ var windowsObserver = {
 	checkForLastPrivateTab: function(e) {
 		var tab = e.originalTarget || e.target;
 		var window = tab.ownerDocument.defaultView;
+		if(!("privateTab" in window)) {
+			_log("checkForLastPrivateTab(): window is closing, do nothing");
+			return;
+		}
 		if(
 			window.privateTab._checkLastPrivate
 			&& this.isPrivateTab(tab)